The Platypus MetaBottle
is a flexible water bottle for packing up and and staying on the go. When it's full, the bottle expands to .75L.
Drink up the water inside, then squash the bottom half down and tuck into your pack for later. Water at the office, water on a hike, water everywhere! You can even add a microfilter (sold separately) to grab water straight from the source while out in the wilderness.